[R] Basic regression output question

[Kingsford Jones]

On Mon, Mar 23, 2009 at 11:04 AM, GRANT Lewis <L.Grant at hermes.co.uk> wrote:

[snip]

> factors<-matrix(runif(400),nrow=40)
> returns1<-matrix(runif(40),nrow=1)
> returns2<-matrix(runif(2000),nrow=50)
> coef(summary(lm(t(returns1)~factors)))[1,4]

[snip]

> (coef(summary(lm(t(returns2)~factors)))[50])[1,4]
>
> Error in `[.default`((coef(summary(lm(t(returns2) ~ factors)))[50]), 1,
> :
>  incorrect number of dimensions


Use of the 'str' function will reveal you are indexing a list element,
so try [[50]] rather than [50]

hth,

Kingsford Jones



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